Average Concentrations of Fine Particulate Matter in Urban Areas Across the World

World Average PM2.5 Concentrations 2014 - WHO


The World Health Organization has posted several maps about information pertaining to Global Health. This one in particular shows the annual mean PM2.5 concentration for each country of the world. What is very interesting is the dark band of countries From China to Cameroon and Peru showing the highest average PM2.5 concentrations.